Door-operating mechanism



v w. A. DE FOREST. DOOR OPERATING MECHANISM.

APPLICATION FILED MAY 15, 1919.

Patented Mar. 15, 1921:.

UNITED 'YSTATES PATENT OFFICE.

WIN'THROP A. DE FOREST, OF TOLEDO, QEIO.

DOOR OPEBATING MECHANISM.

To all whom it may concern:

- Be it known that I, WINTER-OP A. Du

'Fonnsr, a citizen of the United States, re-

sidin at Toledo, in the county of Lucas andtate of Ohio, have inventedcertain new and useful Improvements in Door- Operating Mechanisms; and I,do declare the following to be a full, clear, and exact description ofthe invention, such as willj enable others skilled in the art to whichit appertains to make and use the same, refer mechanism for opening andclosing folding doors, such as the doors of a garage. My invention isalso designedto furnish a construction by means of which such openingand closing of the doors ma be effected from a point remote from theoors.

.To-these ends my invention consists ofthe devices,- construction andarrangement of parts hereinafter described, and illustrated in theaccompanying drawings, in which- Figure 1 is a top-plan view of a pairof folding doors equipped with my control, and Fi 2, an elevation of thesame.

imilar characters indicate like parts in both views.

In the drawin s, a pair of doors, hinged to swing inward y, is indicatedby the numerals 1-2. Upon the casing of these doors, or upon the wall,directly abovethe meeting line of the free edges of the doors,

is rigidly secured a stout bracket 3. .Upon the outer end of thisbracket a' horizontal.

77 are brackets secured to the wall or door-casing at opposite sides ofthe dooropening near and just'below theupper edge of the doors. To eachof these brackets is pivotally secured, as at 8, one end of a lever 9,of the second class. At their other ends these levers are' connected, asat 10, with oneend of a connecting rod 11, the other end of which ispivotally connected, as at 12, with the lever 4, the two rods 11 beingconnected with opposite ends of the lever 4. The rods 11 are adjustable,as to length, by means of turn-buckles. as clearly Specification ofIietters Patent.

,' whichform a part of this specifica r Patented Mai-.15, 1921.

. Application filed May 15, 1919. Serial Ii'o. 297,228.v

indicated in the drawings. The rods herein referred to may be andpreferably are formed ofpipes. The relation of the levers 9 and the rodsll to the lever 4 is such that the latter lever rests normally at anangle of forty-five degrees to the plane of the doors when these are ineither closed or open position.

Upon each of the doors near its top, is

secured a bracket 13 to which is pivoted, as at 14, one end ofalink-bar15, the other end of which is pivotally connected, asatv 16, to thelever 9. It will be seen that the parts thus far described as connectedwith lever 4, are interchangeable and may be used upon either the rightor left hand door. It is now manifest that the swing of thelever 4 uponits fulcrum will, through rods 11 the levers 9 andthe links 15,.causethe doors to swing upon their hinges either into open or closedposition. This swing of the lever 4 1s attalned by means of themechanism now to be described.-

is pivotallyconnected, as at 19, with the lever 4, as at 20,-by means ofthe longitudinally adjustable rod or pipe 21. Secured to the uprightshaft 18, aconvenient distance from the floor, is an arm or handle 22,by means of which the shaft 18 may be rotated,thus giving motion to thearm 18 and to the lever 4 through the connecting rod 21. It will thus beseen that by swinging the handle 22, the doors, through the connectionsabove described, are'swung upon their hinges into openor closedposition. v

If it is desired to operate the doors from a distant point, this may beeffected by 'means of a'rod 23 pivotally connected to the arm or handle22,- as at 24, and extending to any desired point. It will beunderstood,

without illustration, that this rod may be either manually ormechanically actuated, and that the mechanical means may be of anysuitable sort controlled by any familiar controlling devices, which,being no part of the present invention, need not be here fur therelaborated. y

Having described my invention. what 'I crumed on the latter brackets, vpivotally connect the latter levers'with the 1 the meeting edges of thedoors, a lever of the first cIass fulcrumed on said -bracket,

for each of said doors a stationary bracket secured near the top of thehinged edge of the door, levers of the. second class fullinksrwhi hdoors rods which pivotally connect the opposite ends of the lever firstmentioned W th said links, and devices for actuating said. 15

D first mentioned lever, whereby the doors are simultaneouslyopened'and' closed? v In testimony whereof'I affix-my signatnre inpresence oftwo Witnesses.

-vv nrnnor A. DE FOREST. Witnessesi n .Y MARK WINCHESTER, I

Gmon 'SMrrH.

